Combined means of operating the throttle-valve and governing the speed of an engine.



G. W. SEAMAN. COMBINED MEANS OF OPERATING THE THROTTLE VALVE AND GOVERNING THE SPEED OF AN ENGINE.

APPLICATION FILED APR. 10, 1911.

Patented Julyl6, 1912.

land and State ofOhio,

valve operating TED STATES PATENT OFFICE.

GEORGE W. SEAMAN, OF MANSFIELD, OHIO, ASSIGNOR TO THE AITLTMAN 8s TAYLOR COMBINED MEANS MACHINERY COMPANY, OF MANSFIELD, OHIO, A CORPORATION OE OHIO.

OF OPERATING THE THROTTLE-VALVE AND GOVERNING TEIE SPEED OF AN ENGINE.

Specification of Letters Patent. Application filed April 10, 1911. Serial No. 619,953.

Patented July 16, 1912.

To all whom it may concern:

Be it known that I, GEORGE W. SEAMAN, a citizen of the United States of America, residing at Mansfield, in the county of Richhave invented certain new and useful Improvements in Combined Means of Operating the Throttle- Valve and Governing the Speed of an Engine, of which the following is a specification.

My. invention relates to combined means for operating the throttle valve of an engine and of regulating and governing the speed of the engine.

The objects of my invention are to provide means for governing and controlling the speed of engines or thelike that very sensitiyte in operation and admit of a wide range of speed variation; to provide means of operating a throttle valve of an engine; said governing means and operating means being connected together and adapted to operate independent ofeach other, one automatically and the other by hand manipulation while the engine is in operation, and to provide a novel connecting link between the governing mechanism and the throttle valve operating mechanism. I attain these and other objects by the construction and arrangement of the parts hereinafter fully described and illustrated in the accompanying drawings, in which':-

Figure 1 is a view in perspective showing the parts comprising my invention assembled and applied to a gasolene engine. 2 shows the connecting link betweemthe governing and throttle valve operating mechanism. Fig. 3 is a detail view of the link block showing meansof attaching it to the connecting link. 'Fig. 4 shows the throttle lever.

Referring to the drawings, reference numeral 1 indicates a throttle valve chamber having a flange portion 2 which may be used to attach it to the engine cylinder or it-may be attached by any other well known means. The reduced portion 3 of the valve chamber is adapted for connecting with a carbureter (not shown) through which a gaseous mixture or other power fluid isdrawn to supply the cylinders. I

The valve chamber 1 is provided with a shaft 4 extending transversely therethrough will be Fig.

"and journaled thereto and upon which rigidly mounted the throttle valve 5, and when movement is imparted to the valve it opens or closes the passage-way through the chamber 1. The valve shaft 4 swings upon the journals 6 and rigidly secured to the outer end of the shaft is the crank arm 7, to

the upper end of which is pivotally connected the connecting link 8, the enlarged lateral portions 9 of which are provided with suit able apertures 10 and a pin 11, thus adapting the said connecting link to pivot-ally engage the block 12.

The block 12 has adjustably secured thereto and rigidly held in the adjusted position by means of the lock nuts 13, the governor rod 14, which is pivotally connected to the lever or arm 15, the latter being rigidly secured at its lower end to a shaft 16, upon the opposite end of which is alsorigidly secured the lever 17 in a suitable fixed relation to the arm 15. The shaft 16 may be supported and journaled in any desired manner. as by means of bearing brackets 18.

The arm 17 is provided with a bifurcated end 19 adapted to suitably engage the shaft collar 20 of the conventional governor 21. It will be understood that the governor shaft 22 is operated by connecting means to the engine, the speed of the governor being always proportionate to the speed of the engine shaft. It will also be observed that the shaft collar 20 slidablv engages the governor shaft 22, the said collar being reciprocated by the movement of the governor balls or weights 23, as the latter are actuated by centrifugal force. 7

The lower end 24 of the connecting link 8 has a suitable aperture 25, through which is inserted one of the bent ends of the link 26 making a pivotal connection and the other end 27 of the link 26 is similarly bent and fitted to the lower end "of the lever '28, the upper end of which is rigidly secured to the shaft 29 of the crank arm 30. The crank arm 30 is adapted to move about the horizontal axis of the shaft 29, which may be supported in any desired manner, as by the bearing brackets 31. L

The crank arm 30 is pivotally connected by the eye 32 of the arm 30 to the connecting rod 33. the other end of which has a substantially right angle bend 35 which engages leverframe 40. The hand lever 37 has a face and at the upper end 44 of the lever projecting'portion'tl. extending in a lateral direction and provided with serrations on thef'ace 42 (see Fig. 4). The serrations engage similar serrations 43 formed upon the frame 40. 'The hand lever 37 also has, at its lower extremity, a projection 45, the face 46 of which is adapted to slidably engage the face 47 of the lever frame 40, as the said handle is moved forward or backward on .the pivot stud 39. A coil spring- 48 which is held in place on the stud 39 by means of a washer 49 and cotter pin 50, normally but yieldingly holds the hand lever 37 in place and the face 46 of the projection engages the face 47 of the lever frame 40.

From the foregoing, it will be seen that the hand lever 37 may be moved about they axis of the shaft 39, being held in any desiredposition between the stops 51'and 52,

the serrations 42 which are yieldingly pressed into engagement with the serrations 43 by the coiled spring 48. It will also beobserved that the movement of the lever 37 actuates the throttle valve 5, thus adjusting the passage-way through the valve chamber 1, to admit the passage of the proper amount of gaseous mixture or other fluid power to produce the desired speed.

The operation of my device is as follows :-The hand lever 37 is moved about the axis of the shaft 39, thus imparting movement to the connecting rod 33, the crank arm 30, the shaft 29; the lever 28 and the link 26 being thus moved in either direction by .the hand lever 37, and with them the connecting) link 8, and as it is only necessary for-the lock 12 and reach rod 14 to have a very slight longitudinal movement,

' the pin 11 therefore serves as a pivot for the connecting link,8 while the hand lever is being operated, thus .moving the upper end 53 of the connecting link 8 in the direction desired from the lower end 24 of the same,

and by reason of the pivoted connection 54 the upper end of the crank arm 7 will b e moved about the axis of the shaft 4,carrying with it said shaft 4.and throttle valve 5. The governor weights 23 being actuated by centrifugal force, cause the collar 20 to reciprocate upon the shaft 22 and carry with it the bifurcated end 19 of the arm 17, as the speed of the engine varies, on account of increased or decreased load, and as the levers l5 and 17 are both rigidly secured to the shaft 16, the latter will be partially rotated in the journals of the brackets 18; the governor reach rod 14 will thus be reciprocated longitudinally and with it'the upper end 53 of the'connecting link 8 which will now move upon the pivotal connection at its lower end 24, and through the medium of the crank arm 7 as herein before described, the throttle valve 5 will be actuated automatically to open or close the size of the passage-way through the valve chamber 1, as the governor weights rise and fall in accordance with'the speed of the engine. It will therefore be apparent that I provide a mechanism for controlling the speed of engines, which may be. manually adjusted to any desired speed, after which the speed will be automatically 'regulated to govern the speed of the engine substantially constant, under varying conditions of load.

. Although I have shown one particular arrangement of my invention, as applied to a- -gasolene traction engine, I do not wish to be so limited as it will be apparent that considerable variation may be made in the structure shown and its application to other engines or the like may be made without departing from the spirit or scope of my invention.

What I claim is 4 1. A throttle valve having a crank arm connected thereto, a swinginglink pivotally connected to thecrank pin of said arm, an operating lever, means to connect the operating lever to the swinging link; said link being provided block ,pivoted to swing within said orifice, and means connected to the lower portion of said block to automatically regulate the valve and control the speed of the engine.

2. A throttle valve operating mechanism comprising a serrated lever bracket, a lever pivotally secured thereto, a connecting rod secured tothe lever, a crank shaft connected thereto, a crank arm connected to the crank shaft, :1 link connected to the crank arm, a speed governing mechanism, a connecting link having a rectangular orifice, a block pivotally-connected to swing within said orifice and adapted to connect the speed governing mechanism. and throttle valve operating mechanism, whereby one can be operated by hand manipulation and the other actuated automatically. j

3. A throttle valve operating mechanism combined with a speed controllingmechanism by a link provided with a rectangular orifice, a block pivoted to swing within said orifice, means connected to said block to automatically operate the governing mechanism through the link and throttle valve op erating means connected to said link adapted to be manually operated.

4. In a throttle valve operating mechanism and a speed governing mechanism, a

with a rectangular orifice, a

connecting link provided-with a rectangular throttle valve mechanism thereto, and means on said connecting link to connect the governing mechanism thereto, as described and set forth.

5. The combination of means to operate the throttle valve of an engine and means to govern the speed of the engine'and of means comprising a link With a, rectangular orifice and a block pivoted to swing within said orifice to connect the throttle Valve operat- 10 ing mechanism and the speed governing mechanism together whereby the throttle valve can be operated manually and automatically. 1

In testimony whereof I affix my signature 1n presence of two witnesses.

"GEORGE W. SEAMAN.

Witnesses: WM. I. BISHOP,

JOHN H. Coss. 

